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试验研究了多元低合金化铸造热锻模具钢（ＪＣＤ钢）的组织与性能。结果表明，ＪＣＤ钢的淬火＋回火组织为低碳马氏体＋贝氏体＋少量碳化物及残余奥氏体。ＪＣＤ钢与５ＣｒＭｎＭｏ钢相比，具有好的回火稳定性、热稳定性、抗冷热疲劳性，且成本低、寿命长、应用前景广阔。
The microstructure and properties of multi-elemental low alloyed hot-forged die steel (JCD steel) were investigated experimentally. The results show that the quenched and tempered microstructure of JCD steel is low carbon martensite + bainite + a few carbides and residual austenite. Compared with 5CrMnMo steel, JCD steel has good tempering stability, thermal stability, thermal fatigue resistance, low cost, long service life and broad application prospects.